A stream of Apple executives and employees called as witnesses in the Samsung trial this week has forced them to give up some interesting bits of information that the famously secretive company would no doubt like to be kept private. Much of what we’ve heard has to do with Apple’s vaunted product design and development process. But we’ve also gotten some concrete detail about how the iPhone, in particular, came to fruition.

Here’s some of the most interesting facts learned this week about the iPhone.